removed obsolete C65 keyboard support code

CONFIG.md

@@ -215,10 +215,6 @@ Allows to use CAPS LOCK key on the C128 keyboard, this is independent from `KEYB
 
 Needs about 50 bytes more space in KERNAL segment. If unsure - disable.
 
-### `KEYBOARD_C65`, `KEYBOARD_C65_CAPS_LOCK`
-
-Similar, but for C65 keyboard. Please note - the C65 keyboard support is (as of yet) completely untested!
-
 ### `KEY_REPEAT_DEFAULT`
 
 Enables key repetition by default during the startup (sets `RPTFLG`).

src/,,config_custom.s

@@ -79,8 +79,6 @@
 ;; #CONFIG# LEGACY_SCNKEY              NO
 ;; #CONFIG# KEYBOARD_C128              NO
 ;; #CONFIG# KEYBOARD_C128_CAPS_LOCK    NO
-;; #CONFIG# KEYBOARD_C65               NO        ; untested
-;; #CONFIG# KEYBOARD_C65_CAPS_LOCK     NO        ; untested
 ;; #CONFIG# KEY_REPEAT_DEFAULT         NO
 ;; #CONFIG# KEY_REPEAT_ALWAYS          NO
 ;; #CONFIG# KEY_FAST_SCAN              YES
@@ -102,13 +100,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                "LIST"
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/,,config_cx16.s

@@ -36,13 +36,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                NO
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/,,config_generic.s

@@ -89,13 +89,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                "LIST"
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/,,config_generic_crt.s

@@ -91,13 +91,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                "LIST"
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/,,config_mega65.s

@@ -46,8 +46,6 @@
 ; --- Keyboard settings
 
 ;; #CONFIG# LEGACY_SCNKEY              NO
-;; #CONFIG# KEYBOARD_C65               NO        ; does not work
-;; #CONFIG# KEYBOARD_C65_CAPS_LOCK     NO        ; does not work
 ;; #CONFIG# KEY_REPEAT_DEFAULT         NO
 ;; #CONFIG# KEY_REPEAT_ALWAYS          NO
 ;; #CONFIG# KEY_FAST_SCAN              YES

src/,,config_testing.s

@@ -89,13 +89,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                "LIST"
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/,,config_ultimate64.s

@@ -79,13 +79,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                "LIST"
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/,,config_ultimate64_crt.s

@@ -81,13 +81,6 @@
 
 ;; #CONFIG# KEYCMD_HELP                "LIST"
 
-;; #CONFIG# KEYCMD_F9                  NO
-;; #CONFIG# KEYCMD_F10                 NO
-;; #CONFIG# KEYCMD_F11                 NO
-;; #CONFIG# KEYCMD_F12                 NO
-;; #CONFIG# KEYCMD_F13                 NO
-;; #CONFIG# KEYCMD_F14                 NO
-
 
 ; --- Screen editor
 

src/aliases/,aliases_config.s

@@ -233,8 +233,6 @@
 	!ifdef CONFIG_TAPE_NORMAL             { !error "CONFIG_LEGACY_SCNKEY is not compatible with CONFIG_TAPE_NORMAL"                }
 	!ifdef CONFIG_KEYBOARD_C128           { !error "CONFIG_LEGACY_SCNKEY is not compatible with CONFIG_KEYBOARD_C128"              }
 	!ifdef CONFIG_KEYBOARD_C128_CAPS_LOCK { !error "CONFIG_LEGACY_SCNKEY is not compatible with CONFIG_KEYBOARD_C128_CAPS_LOCK"    }
-	!ifdef CONFIG_KEYBOARD_C65            { !error "CONFIG_LEGACY_SCNKEY is not compatible with CONFIG_KEYBOARD_C65"               }
-	!ifdef CONFIG_KEYBOARD_C65_CAPS_LOCK  { !error "CONFIG_LEGACY_SCNKEY is not compatible with CONFIG_KEYBOARD_C65_CAPS_LOCK"     }
 }
 !ifdef CONFIG_MB_M65 {
 	!ifdef CONFIG_KEYBOARD_C128           { !error "MEGA65 motherboard is not compatible with CONFIG_KEYBOARD_C128"                }
@@ -244,8 +242,6 @@
 !ifdef CONFIG_MB_U64 {
 	!ifdef CONFIG_KEYBOARD_C128           { !error "Ultimate 64 motherboard is not compatible with CONFIG_KEYBOARD_C128"           }
 	!ifdef CONFIG_KEYBOARD_C128_CAPS_LOCK { !error "Ultimate 64 motherboard is not compatible with CONFIG_KEYBOARD_C128_CAPS_LOCK" }
-	!ifdef CONFIG_KEYBOARD_C65            { !error "Ultimate 64 motherboard is not compatible with CONFIG_KEYBOARD_C65"            }
-	!ifdef CONFIG_KEYBOARD_C65_CAPS_LOCK  { !error "Ultimate 64 motherboard is not compatible with CONFIG_KEYBOARD_C65_CAPS_LOCK"  }
 }
 
 
@@ -390,15 +386,6 @@
 
 ; Handle keyboard configuration
 
-!ifdef CONFIG_KEYBOARD_C128           { !set CONFIG_KEYBOARD_C128_OR_C65 = 1 }
-!ifdef CONFIG_KEYBOARD_C65            { !set CONFIG_KEYBOARD_C128_OR_C65 = 1 }
-
-!ifdef CONFIG_KEYBOARD_C65            { !set CONFIG_KEYBOARD_C65_OR_CAPS_LOCK = 1 }
-!ifdef CONFIG_KEYBOARD_C65_CAPS_LOCK  { !set CONFIG_KEYBOARD_C65_OR_CAPS_LOCK = 1 }
-
-!ifdef CONFIG_KEYBOARD_C128_CAPS_LOCK { !set CONFIG_KEYBOARD_CAPS_LOCK = 1 }
-!ifdef CONFIG_KEYBOARD_C65_CAPS_LOCK  { !set CONFIG_KEYBOARD_CAPS_LOCK = 1 }
-
 !ifdef CONFIG_JOY1_CURSOR             { !set CONFIG_JOY1_OR_JOY2_CURSOR = 1 }
 !ifdef CONFIG_JOY2_CURSOR             { !set CONFIG_JOY1_OR_JOY2_CURSOR = 1 }
 

src/aliases/,aliases_petscii_codes.s

@@ -14,11 +14,8 @@
 
 !ifdef CONFIG_KEYBOARD_C128           { !set _NEED_EXTENDED   = 1 }
 !ifdef CONFIG_KEYBOARD_C128_CAPS_LOCK { !set _NEED_CAPS_LOCK  = 1 }
-!ifdef CONFIG_KEYBOARD_C65            { !set _NEED_EXTENDED   = 1 }
-!ifdef CONFIG_KEYBOARD_C65_CAPS_LOCK  { !set _NEED_CAPS_LOCK  = 1 }
 !ifdef CONFIG_MB_M65                  { !set _NEED_CAPS_LOCK  = 1 }
 !ifdef CONFIG_MB_M65                  { !set _NEED_EXTENDED   = 1 }
-!ifdef CONFIG_KEYBOARD_C65            { !set _NEED_C65KB      = 1 }
 !ifdef CONFIG_MB_M65                  { !set _NEED_C65KB      = 1 }
 
 

src/kernal/assets/programmable_keys.s

@@ -29,7 +29,7 @@ programmable_keys_codes:
 
 	!ifdef CONFIG_KEYCMD_HELP { !byte KEY_HELP }
 
-} else ifdef CONFIG_KEYBOARD_C65 {
+} else ifdef CONFIG_MB_M65 {
 
 	!ifdef CONFIG_KEYCMD_HELP { !byte KEY_HELP }
 
@@ -76,7 +76,7 @@ __str_offset_F8:      !ifdef CONFIG_KEYCMD_F8   { +CONFIG_KEYCMD_F8
 __str_offset_HELP:    !ifdef CONFIG_KEYCMD_HELP { +CONFIG_KEYCMD_HELP
 	!byte $00 }
 
-} else ifdef CONFIG_KEYBOARD_C65 {
+} else ifdef CONFIG_MB_M65 {
 
 __str_offset_HELP:    !ifdef CONFIG_KEYCMD_HELP { +CONFIG_KEYCMD_HELP
 	!byte $00 }
@@ -123,7 +123,7 @@ programmable_keys_offsets:
 
 	!ifdef CONFIG_KEYCMD_HELP { !byte __str_offset_HELP - programmable_keys_strings }
 
-} else ifdef CONFIG_KEYBOARD_C65 {
+} else ifdef CONFIG_MB_M65 {
 	
 	!ifdef CONFIG_KEYCMD_HELP { !byte __str_offset_HELP - programmable_keys_strings }
 

src/kernal/extapi_m65/mega65_modeset.s

@@ -65,6 +65,11 @@ m65_mode65:
 
 	jsr m65_native_meminit
 
+	; Set C65 keybord handling - XXX check this before enabling
+
+	; lda #$02
+	; sta C65_EXTKEYS_DDR ; output for most keys, input for CAPS LOCK bit
+
 	; Set screen mode to 80x50
 
 	lda #$02

src/kernal/init/fda3.ioinit.s

@@ -148,12 +148,6 @@ IOINIT_skip_DOS:
 	stx VIC_CLKRATE                    ; store $00
 }
 
-!ifdef CONFIG_KEYBOARD_C65_OR_CAPS_LOCK {
-
-	lda #$02
-	sta C65_EXTKEYS_DDR ; output for most keys, input for CAPS LOCK bit
-}
-
 	; Set DDR on CIA2 for IEC bus, VIC-II banking (see [CM64], $DDOO description on page 193)
 	lda #$3F
 	sta CIA2_DDRA    ; $DD02

src/kernal/keyboard/kb_matrix_65.s

@@ -1,25 +0,0 @@
-;; #LAYOUT# STD *        #TAKE
-;; #LAYOUT# X16 *        #IGNORE
-;; #LAYOUT# *   KERNAL_0 #TAKE
-;; #LAYOUT# *   *        #IGNORE
-
-;
-; Extended keyboard matrix for Commodore 65 keyboards, based on
-;
-; - https://github.com/MEGA65/c65-specifications/blob/master/c65manualupdated.txt
-;
-
-
-!ifdef CONFIG_KEYBOARD_C65 { !ifndef CONFIG_LEGACY_SCNKEY {
-
-
-kb_matrix_65:
-
-	!byte $00, $00, $00, KEY_HELP, KEY_F9,  KEY_F11, KEY_F13, KEY_ESC
-
-kb_matrix_65_shifted:
-
-	!byte $00, $00, $00, KEY_HELP, KEY_F10, KEY_F12, KEY_F14, KEY_ESC
-
-
-} } ; CONFIG_KEYBOARD_C65 and no CONFIG_LEGACY_SCNKEY

src/kernal/keyboard/kb_matrix_bucky.s

@@ -21,8 +21,8 @@ kb_matrix_bucky_confmask: ; values to be written to CIA1_PRA
 	!byte %10111111 ; SHIFT (right)
 	!byte %01111111 ; VENDOR      
 	!byte %01111111 ; CTRL
-!ifdef CONFIG_KEYBOARD_C128_OR_C65 {
+!ifdef CONFIG_KEYBOARD_C128 {
-	!byte %11111111 ; C128 / C65 extra keys
+	!byte %11111111 ; C128
 	!byte %11111111
 }
 
@@ -42,19 +42,6 @@ kb_matrix_bucky_confmask_c128: ; values to be written to VIC_XSCAN
 	!byte %11111011 ; NO_SCRL
 }
 
-!ifdef CONFIG_KEYBOARD_C65 {
-
-kb_matrix_bucky_confmask_c65: ; values to be written to C65_EXTKEYS_PR
-
-	!byte %11111111
-	!byte %11111111
-	!byte %11111111
-	!byte %11111111
-
-	!byte %11111101 ; ALT
-	!byte %11111101 ; NO_SCRL
-}
-
 
 kb_matrix_bucky_testmask: ; for AND with CIA1_PRB value
 
@@ -66,10 +53,6 @@ kb_matrix_bucky_testmask: ; for AND with CIA1_PRB value
 	!byte %10000000 ; ALT
 	!byte %00000001 ; NO_SCRL
 }
-!ifdef CONFIG_KEYBOARD_C65 {
-	!byte %00000100 ; ALT
-	!byte %00000001 ; NO_SCRL
-}
 
 
 kb_matrix_bucky_shflag: ; mask to be ORed to SHFLAG to mark key status
@@ -82,7 +65,7 @@ kb_matrix_bucky_shflag: ; mask to be ORed to SHFLAG to mark key status
 	!byte KEY_FLAG_ALT
 	!byte KEY_FLAG_NO_SCRL
 	!byte KEY_FLAG_CAPSL
-} else ifdef CONFIG_KEYBOARD_C128_OR_C65 {
+} else ifdef CONFIG_KEYBOARD_C128 {
 	!byte KEY_FLAG_ALT
 	!byte KEY_FLAG_NO_SCRL
 }

src/kernal/keyboard/scnkey.s

@@ -86,21 +86,6 @@ SCNKEY:
 	stx VIC_XSCAN                      ; disconnect C128 keys if no C128 keyboard is supported
 } }
 
-!ifdef CONFIG_KEYBOARD_C65_CAPS_LOCK {
-
-	lda C65_EXTKEYS_PR
-	and #$01
-	bne @2                             ; branch if no CAPS LOCK
-
-	lda #KEY_FLAG_CAPSL
-	sta SHFLAG
-@2:
-
-!ifndef CONFIG_KEYBOARD_C65 {
-	ldx #$FF
-	stx C65_EXTKEYS_PR                 ; disconnect C65 keys if no C65 keyboard is supported
-} }
-
 	ldy #(__kb_matrix_bucky_confmask_end - kb_matrix_bucky_confmask - 1)
 scnkey_bucky_loop:
 	lda kb_matrix_bucky_confmask, y
@@ -108,10 +93,6 @@ scnkey_bucky_loop:
 !ifdef CONFIG_KEYBOARD_C128 {
 	lda kb_matrix_bucky_confmask_c128, y
 	sta VIC_XSCAN
-}
-!ifdef CONFIG_KEYBOARD_C65 {
-	lda kb_matrix_bucky_confmask_c65, y
-	sta C65_EXTKEYS_PR
 }
 	lda kb_matrix_bucky_testmask, y
 	and CIA1_PRB
@@ -162,9 +143,6 @@ scnkey_keytab_set_done:
 	stx CIA1_PRA                       ; connect all the rows
 !ifdef CONFIG_KEYBOARD_C128 {
 	stx VIC_XSCAN
-}
-!ifdef CONFIG_KEYBOARD_C65 {
-	stx C65_EXTKEYS_PR
 }
 	dex                                ; puts $FF
 	cpx CIA1_PRB
@@ -194,9 +172,6 @@ scnkey_keytab_set_done:
 	ldy #$FF                           ; offset in key matrix table, $FF for not found yet
 !ifdef CONFIG_KEYBOARD_C128 {
 	jsr scnkey_128
-}
-!ifdef CONFIG_KEYBOARD_C65 {
-	jsr scnkey_65
 }
 	ldx #$07
 scnkey_matrix_loop:
@@ -326,32 +301,12 @@ scnkey_output_key:
 
 	; Retrieve the PETSCII code
 
-!ifdef CONFIG_KEYBOARD_C128_OR_C65 {
+!ifdef CONFIG_KEYBOARD_C128 {
 
 	cpy #$40
 	bcc scnkey_output_get_keycode
 
-!ifdef CONFIG_KEYBOARD_C128 {
 	lda kb_matrix_128 - $41, y         ; retrieve key code from C128 extended matrix
-} else ifdef CONFIG_KEYBOARD_C65 {
-
-	; Select key matrix (normal or shifted) for extended C65 keys
-
-	lda SHFLAG
-	and #%00000111 ; KEY_FLAG_SHIFT + KEY_FLAG_VENDOR + KEY_FLAG_CTRL
-	beq scnkey_output_65_no_shift
-	cmp #KEY_FLAG_SHIFT
-	; XXX how to behave on VENDOR/CTRL key? Harmonize this with clasic keys behavior
-	bne scnkey_no_keys                 ; no scanning for this bucky key combination
-
-	lda kb_matrix_65_shifted - $41, y
-	jmp scnkey_got_petscii
-
-scnkey_output_65_no_shift:
-
-	lda kb_matrix_65 - $41, y 
-}
-
 	jmp scnkey_got_petscii
 
 	; FALLTROUGH
@@ -360,16 +315,16 @@ scnkey_output_get_keycode:
 
 	lda (KEYTAB), y	                   ; retrieve key code from standard matrix
 
-} ; CONFIG_KEYBOARD_C128 or CONFIG_KEYBOARD_C65
+} ; CONFIG_KEYBOARD_C128
 
-!ifdef CONFIG_KEYBOARD_CAPS_LOCK {
+!ifdef CONFIG_KEYBOARD_C128_CAPS_LOCK {
 
 	; Check if we need special handling for a CAPS LOCK key
 	; This is shorter than a separate set of tables
 
 scnkey_handle_caps_lock:
 
-!ifndef CONFIG_KEYBOARD_C128_OR_C65 {
+!ifndef CONFIG_KEYBOARD_C128 {
 	lda (KEYTAB), y
 }
 	tax 
@@ -390,9 +345,9 @@ scnkey_handle_caps_lock:
 @7:
 	txa
 
-} ; CONFIG_KEYBOARD_C128_CAPS_LOCK or CONFIG_KEYBOARD_C65_CAPS_LOCK
+} ; CONFIG_KEYBOARD_C128_CAPS_LOCK
 
-!ifndef CONFIG_KEYBOARD_C128_OR_C65 { !ifndef CONFIG_KEYBOARD_CAPS_LOCK {
+!ifndef CONFIG_KEYBOARD_C128 { !ifndef CONFIG_KEYBOARD_C128_CAPS_LOCK {
 
 	lda (KEYTAB), y
 } }

src/kernal/keyboard/scnkey_65.s

@@ -1,68 +0,0 @@
-;; #LAYOUT# STD *        #TAKE
-;; #LAYOUT# X16 *        #IGNORE
-;; #LAYOUT# *   KERNAL_0 #TAKE
-;; #LAYOUT# *   *        #IGNORE
-
-;
-; Keyboard scanning routine extension for C65 keyboards
-;
-; - [CM128] Computes Mapping the Commodore 128 - pages 212 (SHFLAG)
-; - https://github.com/MEGA65/c65-specifications/blob/master/c65manualupdated.txt (matrix)
-;
-
-
-!ifdef CONFIG_KEYBOARD_C65 { !ifndef CONFIG_LEGACY_SCNKEY {
-
-
-; Inlining this within SCNKEY would both overcomplicate the implementation
-; and disrupt a lot of branches (they would cross the 127 bytes distance limit)
-
-; .Y is now $FF - try to put there a key code from extended keyboard
-
-scnkey_65:
-
-	sty CIA1_PRA                       ; disconnect classic keys
-
-	lda #$00
-	sta C65_EXTKEYS_PR                 ; connect C65 keys
-
-	lda #%00000101                     ; filter out bucky keys: ALT, NO_SCRL
-	ora CIA1_PRB
-
-	cmp #$FF
-	beq scnkey_65_done                 ; skip if no key pressed from this row
-
-	; At least one key is pressed - decode it
-	ldy #$07
-scnkey_matrix_65_loop:
-	cmp kb_matrix_row_keys, y
-	bne @1                             ; not this particular key
-	tya                                ; now .A contains key offset within a row
-	clc
-	adc kb_matrix_row_offsets, x       ; now .A contains key offset from the matrix start
-	adc #$41                           ; now .A contains offset after the standard matrix
-	tay
-	jmp scnkey_65_done
-@1:
-	dey
-	bpl scnkey_matrix_65_loop
-
-	; FALLTROUGH, multiple keys must have been pressed
-
-scnkey_65_no_keys:
-
-	pla                                ; get rid of return address from the stack
-	pla
-
-	jmp scnkey_no_keys                 ; pass controll to original routine
-
-
-scnkey_65_done:
-
-	ldx #$FF
-	stx C65_EXTKEYS_PR                 ; connect C65 keys
-
-	rts
-
-
-} } ; CONFIG_KEYBOARD_C65 and no CONFIG_LEGACY_SCNKEY

src/kernal/screen/e8ea.screen_scroll_up.s

@@ -14,7 +14,7 @@ screen_scroll_up:
 
 	; First handle CTRL and NO_SCRL keys
 
-!ifdef CONFIG_KEYBOARD_C128_OR_C65 {
+!ifdef CONFIG_KEYBOARD_C128 {
 
 	; Do not scroll if NO_SCRL is pressed and interrupts are enabled
 @1:

src/kernal/time/udtim.s

@@ -70,7 +70,7 @@ udtim_keyboard:
 	; key press. But something as simple as this would have created warm restart
 	; with M+N+SPACE+RESTORE due to ghosting - so the original ROM has to provide
 	; some protection here. I do not know what the mechanism there exactly does,
-	; but I hope the mechanism below will be compatible enough.
+	; but I hope the code below will be compatible enough.
 
 	lda #$80
 	sta CIA1_PRA             ; select all the rows except the last one
@@ -78,9 +78,9 @@ udtim_keyboard:
 	ldx #$00
 	stx VIC_XSCAN            ; connect all the extra C128 keys
 }
-!ifdef CONFIG_KEYBOARD_C65 {
+!ifdef CONFIG_MB_M65 {
 	ldx #$00
-	stx C65_EXTKEYS_PR       ; connect all the extra C65 keys
+	stx C65_EXTKEYS_PR       ; connect all the extra C65 keys      XXX test this
 }
 
 	lda CIA1_PRB             ; read the keys
@@ -91,9 +91,9 @@ udtim_keyboard:
 	dex                      ; puts $FF
 	stx VIC_XSCAN            ; disconnect the extra C128 keys
 }
-!ifdef CONFIG_KEYBOARD_C65 {
+!ifdef CONFIG_MB_M65 {
 	dex                      ; puts $FF
-	stx C65_EXTKEYS_PR       ; disconnect the extra C65 keys
+	stx C65_EXTKEYS_PR       ; disconnect the extra C65 keys       XXX test this
 }
 	lda #$7F
 	sta CIA1_PRA             ; select the last row (bit to 0)

tools/generate_strings.cc

@@ -1223,7 +1223,6 @@ void DataSet::generateConfigDepStrings()
     // Keyboard support features
    
     if (GLOBAL_ConfigOptions["KEYBOARD_C128"]) featureStr += "KBD 128\r";
-    if (GLOBAL_ConfigOptions["KEYBOARD_C65"])  featureStr += "KBD 65\r";
 
     // Add strings to appropriate list